Regulator Design 1.3 > download
- LM317 (LM150 , LM350) voltage regulator
- LM317 (LM150 , LM350) current regulator
- L200 voltage and/or current regulator
- TL431 precision shunt regulator
- TL431 precision shunt regulator (with LM317)
- M5237 3-terminal adjustable regulator
- 78xx series voltage regulator
- 78xx series current regulator
- uA723 precision voltage and/or current regulator
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Stabilizer heating power lamps
Stable heating power = stable emission cathode, regardless of the supply voltage or aging lamps. Allows you to stabilize the lamp data throughout its life (and not smooth at the standard of care as powering the heater). Also limits the starting heating power (at the cold glow) that extends the life of the lamp.
Input voltage at least 10.5 V at rated voltage network tries. Performance is maintained until 9.6 V which corresponds to 10% trying to network. Home heating power (in cold filament) is equal to half of the nominal value.
In the class A amplifier with EPD
Psevdoodnotaktny output stage, power depends on the quiescent current curves. cascade at 2A 20W gives good sound .. 4 8Oma acoustics.
Instead BD140 (Philips only) may use 2SA1837, instead 2SC5200 - 2SC3281, MJL3281A, MJL21194.
VT3 should be on the same heatsink with VT4 or VT5. With R7 set the quiescent current of the output stage.
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